diff --git a/include/jsoncons_ext/csv/csv_encoder.hpp b/include/jsoncons_ext/csv/csv_encoder.hpp
index 298b94353..d8472d24d 100644
--- a/include/jsoncons_ext/csv/csv_encoder.hpp
+++ b/include/jsoncons_ext/csv/csv_encoder.hpp
@@ -170,9 +170,13 @@ class basic_csv_encoder final : public basic_json_visitor<CharT>
         neginf_to_str_(options.neginf_to_str()),
         alloc_(alloc),
         fp_(options.float_format(), options.precision()),
+        column_names_(alloc),
+        column_paths_(alloc),
+        column_path_name_map_(alloc),
+        column_path_value_map_(alloc),
+        column_path_column_map_(alloc),
         buffer_(alloc),
         value_buffer_(alloc),
-        column_path_column_map_(alloc),
         column_it_(column_path_column_map_.end())
     {
         if (has_column_mapping_)